90206860 has 12 divisors (see below), whose sum is σ = 189434448. Its totient is φ = 36082736.

The previous prime is 90206843. The next prime is 90206863. The reversal of 90206860 is 6860209.

It is not an unprimeable number, because it can be changed into a prime (90206863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2255152 + ... + 2255191.

It is an arithmetic number, because the mean of its divisors is an integer number (15786204).

Almost surely, 2^90206860 is an apocalyptic number.

It is an amenable number.

90206860 is an abundant number, since it is smaller than the sum of its proper divisors (99227588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90206860 is a wasteful number, since it uses less digits than its factorization.

90206860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510352 (or 4510350 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 90206860 is about 9497.7292022883. The cubic root of 90206860 is about 448.4835539350.

The spelling of 90206860 in words is "ninety million, two hundred six thousand, eight hundred sixty".